The frequency of this circuit, for the indicated components, is 1 kHz. Other operational amplifiers can be used, and the power supply must be symmetrical.
This optically coupled circuit was found in the February 1968 Radio Electronics magazine. The...
We found this circuit in the April 1978 issue of Radio Electronics magazine. The power supply must...
This circuit supports several sets of coils and can oscillate from 1 to 44 MHz. The transistor is an old...